Improvement in horseshoes



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P. O. JOHNSON, Or CENTRAL. CITY, COLORADO TERRITORY Letters Patent No.A 93,447, dated August 10, 1869.

wwf-* IMPROVEMENT IN HORSESHOES.

Hbo-.

The ySchedule referred to vin these Letters Patent and making part bf the same.

v Figure 1 represents an inverted plan view of my h'nproved'jhorsrshmr.- v vFigure 2 is a vertical longitudinal sectionoi' the same, taken on the plane of the line x :c of fig. 1.

calks.

parts.

This invention relates to a new manner of Aconstructing the calks of vhorseshoes, so that they can be readily fastened and rern0ved. y

The object of the invention is to provide a horseshoe which can always remain on the hoof, and which may easily receive new calks when the old ones are worn, or when, in winter, sharpertoes have to be attached. v l

rlhe inventionconsists in making two incisions in one edge of each ca1k,'where`oy the portion between the incisions becomes a lng, that may bebent into a recess provided in the body of the shoe. The calkis fitted wit-l1 a dovetail-tenon into a corresponding groove formedA in the shoe, and theaforesaid'lug is then bent into lthe recess." Thereby the lateral displacement of the calk is prevented, while the tenon pre- Y vents longitudinal and vertical displacement. When the lug is forced out of the recess, the calk can be removed.

Figure Sis a detail perspective view of one of the,

Similar letters of reference indicate corresponding A, in the drawing, represents the body of a horseshoe;

B is the toe; and C O, the calks. Where the same areto'be fitted upon the shoe, the latter is provided with downward projections, a a, as shown.- i

Between the two projections, a, that pertain to one toe or calk, is formed a dovetail-groove, b, shownv in .iig 1 Each calkler -toe has a corresponding. tenon, n,

which can'be fitted intol the groove, s o as to thereby fit .the calk Aor toe to the shoe. Y

` On the inner side, each calk and toe has two incisions, whereby a lug, d, is formed, which may be forced into a recess, c, formed i shoe, as is clearly shown in ig.,2.

The calks and toes are thereby securely fastened v to the shoe, and cannot spontaneously fall of. But

they can be removed when the lug is forced Yout of the recess.

Y Having thus described my'in'vention,

I claim as new, anddesire to secnre by Letters Patent- The lugs d, when. formed by the incisions in the side of the sliding calks, and bent down'into recesses in the raised portions, a, of the shoe, to form a locking-device, in combination with the dovetail connections a a c, all constructed, arranged, and operated as described;

P. C. JOHNSON.

Witnesses:

4AMos \V.'HALL,

J. W. GUMmGs.

n the part a of the 

